PowerOpen Environment
（重定向自PowerOpen）
The PowerOpen Environment (POE), created in 1991, is an open standard for running a Unix-based operating system on the PowerPC computer architecture.
The POE contains API and ABI specifications. The presence of the ABI specification in the POE distinguishes it from other open systems such as POSIX and XPG4, since it allows platform-independent binary compatibility, which is otherwise typically limited to particular hardware. Derived from AIX, the POE conforms to industry open standards including POSIX, XPG4, and Motif.